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.. |title| replace:: Translator Optimisations
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**Objectives**

- Identification and Implementation of Optimisations
  through modifications of the Translator.

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**Description of work**

The following alternatives are mostly specific to a particular low-level run-time.

* Implement and compare different object layout and memory management strategy 
  or strategies, e.g. reference counting vs. Boehm garbage collection vs. our own. 
  Includes speed vs. data size trade-offs.

* Study approaches concerning code size vs. speed trade-offs (e.g. whether the 
  final interpreter should still include compact precompiled bytecode or be 
  completely translated into C).

* Solve the complex issue of threading (global interpreter lock vs.
  alternatives).

* Enhance multimethod dispatching.

* Implement schemes of pointer tagging, e.g. encoding an integer object as a pointer with a 
  special value instead of a real pointer to a data structure representing 
  the integer.
  
* Run various performance tests on the above, check for an
  overall improvement or application dependency.

* For each issue, work on **several solutions** when no one is obviously
  better than the other ones. 
  
* Create reports and merge the results back into the optimization effort.
  As of general interest, submit the reports as publication.

Note that compatibility with legacy C extensions can be achieved by choosing, 
for each of the following issues, the same one as CPython did.

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**Deliverables**

- DL??? to be defined. Publication.
- DL??? Passing all applicable elements of the standard test suite.

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**Milestones and Expected Result**

- M4 with M3 WP42_ WP44_

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